Sarah Michelle Gellar Freaks Out Over Kelly Clarkson on The Crazy Ones

Sarah Michelle Gellar may have been an American Idol fan back in 2002, but on the Sept. 24 premiere of CBS' The Crazy Ones, Gellar loses some affection for season 1 champ Kelly Clarkson. Appearing as ad-agency exec Sydney Roberts, Gellar is forced to go along with her agency partner/father Simon's decision to hire Clarkson as the new pitchwoman for an upcoming campaign.

Agreeing to step into the recording booth to tape a new jingle to help save Sydney and Simon's account with McDonald's, Clarkson tells Simon (Robin Williams) that she's only consenting to the project to rebrand her image as a fresher, sexier pop star. To that end, she's only willing to sing about the "sexy" side of McDonald's.

As a preview from Tuesday's premiere shows, Sydney melts down when she listens in on Clarkson's recording session. "What are they doing in there? This is a sex song! What happened to 'You deserve a break today'" she asks her father as Clarkson rubs up against her duet partner, Sydney's coworker Zach. (Sample lyrics: "It ain't the meat, it's the motion.")

Sarah Michelle Gellar (left) appears as Sydney, an ad agency partner who fumes when her dad (Robin Williams) hires Kelly Clarkson to record a sultry jingle on The Crazy Ones.Gregg DeGuire/WireImage.com; Jeff Kravitz/FilmMagic

"Isn't it fantastic?! She didn't want to do [the original jingle]. It's all about rebranding," Simon offers optimistically. "This is all I could get. We're going to pivot her into the right song." Fumes Sydney in the preview clip: "Oh, my God! I'm about to watch America's sweetheart orgasm in front of my father!"